Jia Yutong, Xu Zhikun, Li Lin, Lin Shuangyan
Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
School of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, PR China.
Dalton Trans. 2022 Mar 29;51(13):5053-5060. doi: 10.1039/d2dt00127f.
2D bimetal metal organic frameworks (MOFs) are recognized as one of the most promising electrocatalysts for the oxygen evolution reaction (OER). Herein, a facile approach was proposed to construct NiFe-MOF nanosheets on Fe foam (FF). As a self-supporting electrode, the NiFe-MOF/FF electrode shows impressive electrocatalytic OER performance. Specifically, it exhibits an ultra-low overpotential of 216 mV to reach a current density of 50 mA cm, and outstanding stability (beyond 50 h at 200 mA cm). The excellent performances of NiFe-MOF/FF arise from the highly exposed active centers, the excellent conductivity, and the synergy effect between Ni and Fe. This research provides a promising strategy for the synthesis of multi-metal MOFs as high-efficiency electrocatalysts.
二维双金属金属有机框架材料（MOFs）被认为是用于析氧反应（OER）最有前景的电催化剂之一。在此，我们提出了一种简便的方法来在泡沫铁（FF）上构建NiFe-MOF纳米片。作为一种自支撑电极，NiFe-MOF/FF电极展现出令人印象深刻的电催化OER性能。具体而言，它在达到50 mA cm的电流密度时表现出216 mV的超低过电位，以及出色的稳定性（在200 mA cm下超过50小时）。NiFe-MOF/FF的优异性能源于高度暴露的活性中心、出色的导电性以及Ni和Fe之间的协同效应。这项研究为合成作为高效电催化剂的多金属MOFs提供了一种有前景的策略。
